Senior Java Architect / Lead Developer

📍 Location: Kraków, Poland
🏢 Work Model: Hybrid (3 days per week from the Kraków office)

Join an international team and play a key role in building and maintaining high-performance, cloud-native solutions. This position offers the opportunity to work on large-scale, business-critical applications, contributing to both strategic architecture decisions and hands-on development.

Key Responsibilities

• Take over responsibilities and knowledge from the current vendor.

• Design, develop, and implement new application functionalities.

• Maintain, enhance, and optimize existing applications.

• Collaborate with business stakeholders and technology teams to deliver scalable solutions.

• Support the development of real-time, high-throughput data platforms.

• Leverage AI-assisted development tools to improve software delivery and productivity.

Required Skills & Experience

• 12+ years of professional experience in software development with Java.

• Strong hands-on experience with:

  • Java

  • Spring Boot

  • Flowable

  • JPA / iBatis

  • Kafka

  • PostgreSQL

  • Cosmos DB

  • Redis

  • REST APIs

  • Azure Cloud

  • Docker

  • Kubernetes

  • Maven

  • Gradle

• Proven expertise in microservices and data streaming architectures.

• Strong knowledge of security technologies, including Azure AD and OAuth.

• Experience with AI-assisted software development practices.

• Deep understanding of Computer Science fundamentals and the Software Development Lifecycle (SDLC).

• Excellent communication skills with the ability to translate business requirements into technical solutions and collaborate across global teams.

Nice to Have

• Experience designing and delivering high-performance, high-throughput platforms.

• Expertise in real-time streaming systems and time-series data processing.

• Experience working in large-scale enterprise environments.

What We Offer

• Opportunity to work on innovative, large-scale international projects.

• Influence on architectural and technical decisions.

• Exposure to modern cloud-native technologies and data-driven solutions.

• Collaborative environment with highly skilled engineering teams.

• Long-term engagement with challenging and impactful work.